Habvey m



H. M. STRONG.

TRANSMiSSiON BAND ADJUSTER. AvvucAnoN miic APR.21.1919.

l'?. Patented oct. 28,1919.

.UNITED strains PATENT oFFioE.

HARVEY memoire, or Das MOINES, Iowa.

- tijnANsiirissIoN-ND ADJUs'rEn u Appnetion n ied April 21,

To all whom it mayconcem:

Be it known that I,I-IARvEY M.,STRNG, a

citizen of the United States, and aresident of Des Moines,

in the county of Polk and State of Iowa,

have invented a certain new and useful Transmission-Band Adjuster, of

able and -inexpensive construction.

AMore particularly it is my object'to provide a transmission band adjuster included as a partA of a transmission band controlling mechanism, 'and' having parts so constructedzand-.arranged that 'by `si1nple and easy adjustment outside of the gear casing, theparts can be adjusted for tightening or loosening the transmission band.

Vith these and other objects in view my invention consists in the construction, arrangement and combination of the various parts 'of the device, whereby the objects' contemplated are attained, as hereinafter more fully set forth, illustrated in tie in which:

Figure 1 shows a perspective view o f a gear casing for. transmission gearing mounted on the `frame of a motor vehicle, said view showing art of my improved transmissionl band a jus'ter.

Fig. 2 shows a detail, sectional view of my improved transmission band adjuster.

Fig. 3 shows a detail iView of the slidable rod. i

Fig. 4 shows a sectional View of said rod and an end view of the bearing at the end of the lever.

Fig. 5 shows a shown in Fig. ent position.

Fig. 6 shows an end elevation of the slidable rod ;l and Fig. 7 shows a ,top or plan view of the. same. l

,My device is particularly designed for use with Ford transmission bands'.

In the accompanying drawings I have used the reference' numeral 10 tol indicate generally the frame of the motor vehicle on which ismounted the transmission gear case 11 having the removable top or cover. plate12.,.

lVithin the gear case are several drums, one. of which isillustrated in Fig. 2-'and inted out in my claim and accompanying drawings,

rear elevation of the parts 4, shown in a slightly diii'erindicated'bythe reference character 13.-

" Specification of Letters I atent.

adapted to coact'with the .beveledface 20ol beveled face 28 a face 20 for thereby forcing the shaft 17- 1011-: f' gitudinally toward the left, and also for `iiniatented oet. 23,1919. 1919. seriai No. 291,684.

Surrounding the drum 13 -is a broken band or Athe like 14, havin at. its ends the outwardly projecting memers ,15l provided with openings or notches to receive'a 'r'e- 60 duced portion 16 of a shaft 17; lBetween v the members 15 on the ortion16 is a coill spring 18. The shaft 17 is extended through a bearing 19 formed preferablyon the'casing 11, and having at its outer end a beloved face 20. The extreme end of the portion. 1'6 of the shaft 17 is screw-threadedas'- at and receives a. nut 22.

The members 15 may consist of, `8 spaced arms, the entire member having f form of a fork, as illustrated,V i Vin Figs. 3 and 7. 3 f.

For holding the nut 22 aga' 'st rotation," with relation to the arms of the member 15,. there is provided a washer'23 between-the., nut 22 and the member 15 having arms 24;.,` receiving the nut 22 'and having an arm projected between the arms of' the' `m'en'iber 15.A 'Y i The arm 25 is narrower Athan the of the member preferably. considerably 8Q`. space between the arms., 15, seas to' allow some rotation of the shaft 17 Without 'causing the washer 23 to engage the arms ofthe member 15 and also the nut 22,; for screwing 'saidisili The bearing 26 has a 4beveled face. the bearing 19.

.- In the outer face of the bearing 2 ,6 1aref.; y alined grooves 29 and--alsolalihed v"grooves 1.1 30. The grooves 30 are arra 'ed-'at ililiieiyA 95 degree angleswith relation .to t e grooves 29. f.

Mounted in the shaft .17 is a 31 kijwhicli' abuts against thebearing 26 and fis received selectively in the grooves 30 or 29;?:1

The shaft 17 projects-beyond the bearing 100 26, as clearly illustrated 'in Figsl, 2 arid-.251." and has in its outer end a pin or gr00ve132.' i

ItIwill be seen that when the' foot leverj pedal 17 is in its normal position, the shaft 17 will beheld at the llimit of its movement 13195 toward 4the right by means of the spring 18,1' .j and the `transmission band 14 will be iii-its -j, loose position.

en the foot pedal '33 is actuated, I will travel onthe beveled Y parting limitedrotation Avvto 'l said shaft-V befrequently adjusted 1n acar'WhiCh has 'through the medium of the pin 31. .The ro- ,tation of-the shaft,v however, has no effect n -acco'untpf the play of the arm 25jintl1e" space between the Varms of. the memberl.

The longitudinal movement of said shaft' tends to drawthe right-hand member 15 toe f 'ward 4the.le' ft,'hand member 15 r(see Fig: 2),

and thereby tightens the transmission rarin 25 engages one of the arms of the' mem 'ber' 15,"t'he drum 13 will be'. actuated for the 'desired purpose.. l

, It iswell knefvn that the band 14 should constant" use. A I-Iovvever, on account of the d1licultyandinconvenience of making such adjustment, which requires the; removal of ffarthcr on or farther off the screwrthreadd f po'rtion-Ql of the shaft; 40

v,the member'-12.and the manipulationfof 'greasecovered.-parts'nithin the gearcase,

sufch adjustmentis usuallyfneglected, 'or

"postponed'as long as possible.

. With my improved adjuster, however, the

'adjustment may be quickly and easily made4 at any time in the following manner. Theroperator may grasp the'handle-orpin' 32 and pull the shaft 17 longitudinally untilY thepin. 3l'clears' the' grooves 30, whereupon* the'shat l'vniay bevrotatedfuntil the pin 31 is opposite the grooves'29. '-,The operator mayQthen release the pin 32 and the Vshaft lwill hav'elbeen .turned 'a quarters revolution' l with)relationto the nut 2 l- .Whethen or not the nutfQQfis screwed as been tightenedA and the.,

necessity of, removingI thev transmission cover case or work-ing' among oil .Covered parts, and that'the adjustment can be made witlr great accuracy.A l

nWhee the threads ofthe member 21 are *made to' onc-eightietlr of an inch; v Some .changs may .f be made in the constructionfandarrangement. of the parts of my improved transmission band adjuster Without departing from the.essentiaLWfeatures and `purposes offmy-invention,'and it .is my intention to cover by my claim any modified forms of structure or useof'mechanical equivalents which may-be-reason-- v ably included Within 'the Scope of the clai'n. L claimas my invention: A The combination ofa drum; -abroken band thereon, -having projecting end members; a support including al bearing having 1twenty `to"the inch, theadjustment can' be 'a-beVeIed-a; a shaftfmo'untedin saidesupport having a"reduced portio1 1 extended f through'saidend members;. 'a nuton said shaft; a spring between said Aend members; means on' said shaft for 4loc l' 1ng" said nut on the shaft Awith relation to one of Said 4end members, and ,adapted -to permit limited r0- AtaryI Iiovement.of the 'shaft and nut with relationto` 'said-end member.; a lever having a 'bearing mounted 'on said. shaft, provided Withbeveled ace'for'coacting With said Iirst'beveled face, saidl'ast bearing having spaced, 'alined pairs ,of grooves in said face;

a; pin extended'through said shaft and se- :a 'f--It will,V offcourse, be 'obviousthat vthe 'di- 'rectionof-Totation' ofsaid'shaft l7 deter#v ,lectively Areceived in one pair of "said grooves, said shaftv projecting beyond' saidend 'ofsaid shaft. 

